From: "Dmitry Kravkov" <dmitry@broadcom.com>
To: davem@davemloft.net, netdev@vger.kernel.org
Cc: "Ariel Elior" <ariele@broadcom.com>,
"Dmitry Kravkov" <dmitry@broadcom.com>,
"Eilon Greenstein" <eilong@broadcom.com>
Subject: [PATCH v2 net-next 09/12] bnx2x: add fan failure event handling
Date: Sun, 13 Nov 2011 14:47:26 +0200 [thread overview]
Message-ID: <1321188449-5822-10-git-send-email-dmitry@broadcom.com> (raw)
In-Reply-To: <1321188449-5822-1-git-send-email-dmitry@broadcom.com>
From: Ariel Elior <ariele@broadcom.com>
Shut down the device in case of fan failure to prevent HW damage.
Signed-off-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
---
drivers/net/ethernet/broadcom/bnx2x/bnx2x.h | 3 ++
drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c | 24 +++++++++++++++++++++-
2 files changed, 26 insertions(+), 1 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
index 23e91f4..78613ef 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x.h
@@ -1141,6 +1141,7 @@ struct bnx2x_fw_stats_data {
enum {
BNX2X_SP_RTNL_SETUP_TC,
BNX2X_SP_RTNL_TX_TIMEOUT,
+ BNX2X_SP_RTNL_FAN_FAILURE,
};
@@ -2048,6 +2049,8 @@ static inline u32 reg_poll(struct bnx2x *bp, u32 reg, u32 expected, int ms,
#define BNX2X_VPD_LEN 128
#define VENDOR_ID_LEN 4
+int bnx2x_close(struct net_device *dev);
+
/* Congestion management fairness mode */
#define CMNG_FNS_NONE 0
#define CMNG_FNS_MINMAX 1
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
index 967c41b..33ff60d 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
@@ -3299,6 +3299,17 @@ static inline void bnx2x_fan_failure(struct bnx2x *bp)
netdev_err(bp->dev, "Fan Failure on Network Controller has caused"
" the driver to shutdown the card to prevent permanent"
" damage. Please contact OEM Support for assistance\n");
+
+ /*
+ * Scheudle device reset (unload)
+ * This is due to some boards consuming sufficient power when driver is
+ * up to overheat if fan fails.
+ */
+ smp_mb__before_clear_bit();
+ set_bit(BNX2X_SP_RTNL_FAN_FAILURE, &bp->sp_rtnl_state);
+ smp_mb__after_clear_bit();
+ schedule_delayed_work(&bp->sp_rtnl_task, 0);
+
}
static inline void bnx2x_attn_int_deasserted0(struct bnx2x *bp, u32 attn)
@@ -8503,6 +8514,17 @@ sp_rtnl_not_reset:
if (test_and_clear_bit(BNX2X_SP_RTNL_SETUP_TC, &bp->sp_rtnl_state))
bnx2x_setup_tc(bp->dev, bp->dcbx_port_params.ets.num_of_cos);
+ /*
+ * in case of fan failure we need to reset id if the "stop on error"
+ * debug flag is set, since we trying to prevent permanent overheating
+ * damage
+ */
+ if (test_and_clear_bit(BNX2X_SP_RTNL_FAN_FAILURE, &bp->sp_rtnl_state)) {
+ DP(BNX2X_MSG_SP, "fan failure detected. Unloading driver");
+ netif_device_detach(bp->dev);
+ bnx2x_close(bp->dev);
+ }
+
sp_rtnl_exit:
rtnl_unlock();
}
@@ -9969,7 +9991,7 @@ static int bnx2x_open(struct net_device *dev)
}
/* called with rtnl_lock */
-static int bnx2x_close(struct net_device *dev)
+int bnx2x_close(struct net_device *dev)
{
struct bnx2x *bp = netdev_priv(dev);
--
1.7.7.2
next prev parent reply other threads:[~2011-11-13 12:47 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-13 12:47 [PATCH v2 net-next 00/12] bnx2x series Dmitry Kravkov
2011-11-13 12:47 ` [PATCH v2 net-next 01/12] bnx2x: allow FCoE and DCB for 578xx Dmitry Kravkov
2011-11-13 12:47 ` [PATCH v2 net-next 02/12] bnx2x: use rx_queue index for skb_record_rx_queue() Dmitry Kravkov
2011-11-13 12:47 ` [PATCH v2 net-next 03/12] bnx2x: remove unused variable Dmitry Kravkov
2011-11-13 12:47 ` [PATCH v2 net-next 04/12] bnx2x: separate FCoE and iSCSI license initialization Dmitry Kravkov
2011-11-13 12:47 ` [PATCH v2 net-next 05/12] bnx2x: propagate DCBX negotiation Dmitry Kravkov
2011-11-13 12:47 ` [PATCH v2 net-next 06/12] bnx2x: DCBX: use #define instead of magic Dmitry Kravkov
2011-11-13 12:47 ` [PATCH v2 net-next 07/12] bnx2x: simplify definition of RX_SGE_MASK_LEN and use it Dmitry Kravkov
2011-11-13 13:10 ` Joe Perches
2011-11-13 13:37 ` Dmitry Kravkov
2011-11-13 12:47 ` [PATCH v2 net-next 08/12] bnx2x: remove unused #define Dmitry Kravkov
2011-11-13 12:47 ` Dmitry Kravkov [this message]
2011-11-13 12:47 ` [PATCH v2 net-next 10/12] bnx2x: prevent race in statistics flow Dmitry Kravkov
2011-11-13 12:47 ` [PATCH v2 net-next 11/12] bnx2x: Remove on-stack napi struct variable Dmitry Kravkov
2011-11-13 12:47 ` [PATCH v2 net-next 12/12] bnx2x: update driver version to 1.70.35-0 Dmitry Kravkov
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